republicans say that's an indictment of the obama administration, bill plante is at the debate site in denver. good morning. >> reporter: good morning. as mitt romney prepares for tonight's debate he's gotten some new ammunition and he got it from none other than the vice president of the united states, joe biden. now look this is not the first time that bid en sort of foot i the mouth has given ammunition to the other side. >> i'm joe. nice to meet you. >> reporter: biden accused romney of planning to raise taxes on the middle class to pay for tax cuts for the wealthy. >> how they can justify raising taxes on the middle class that has been buried the last four years. how in lord's name can they justify raising their taxes. >> reporter: republicans pounced calling biden's remarks that the middle class has been buried for four years a stunning admission. the obama campaign called that a desperate and out of context attack. the vice president shrugs off his tendency to shoot from the lip. >> nobody ever doubted i mean what i say, the problem is i say all that i mean. >> reporter: this is